Turbine-pump.



W. A. DOBLE. mamma PUMP.

APPLICATION FILED JUNE 2 I9I3.

PatentedApr.13,1915.

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TURBINE. PUMP.

APPLICATION FILED IuIIE 2. 1913.

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WILLIAM A. DOBLE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO THE '.lEEL'IO1\TV WATER WHEEL COMPANY, OF SAN FRANCISCO, CALIFORNIA, A. CORPORATION OF CALIFORNIA.

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Application led June 2, 1913.

T all ati/tom it may concern Be it known that I, WILLIAM A. DOBLE, a citizen of the United States, and resident of San Francisco, county of San Francisco, State of California, have invented certain new and useful Improvements in rIurbine- Pumps, of which the following is a specification.

This invention relates to turbine pumps and has for its object the construction of the pump casing in such a manner that all of the water passages are readily accessible for the purpose of machining during the construction of the pump and also for the purpose of cleaning the passages when they become obstructed. In this class of pumps the velocity of the water is very high and it is therefore of great importance to have all of the passages as smooth as possible in order to reduce the frictional losses to a minimum.

The novel features of the invention will be apparent from the following description taken in connection with the accompanying drawings, in which:

Figure 1 is a longitudinal section of a two stage pump. Fig. 2 is a transverse section on the line 2-2 of Fig. 1. Fig. 3 is a side view of one of the casing sections showing the radially arranged water passages.

Referring to the drawings the numeral indicates the pump shaft which has mounted thereon the runners or rotors 11 and 12. rIhe pump is provided with bearings 13 and 14C for the shaft 10 and the latter is provided with a coupling 15 for the purpose of connecting the pump with any suitable source of power. The pump casing comprises the inlet cover 16 which is provided with the inlet 17, and a discharge cover 18 having an outlet 19. Between the covers 16 and 18 is arranged an intermediate section 20. The cover 16 is provided with a sleeve 21 which surrounds the hub of the runner 11 and makes a close t therewith to prevent the leakage of water past the runner. rIhe cover 16 is also provided with vanes 22 forming the diffusion passages 23 which receive the water from the runner 11. rlfhese vanes are integrally formed with the coverv 16 and abut the side of the disk 24, which has formed on its opposite side the channels or passages 25 connecting with the diusing passages by a return bend 26 adj acent the periphery of the casing. 'Ihe pas- Speccation of Letters Patent.

TURBINE-PUMP.

Patented Apr. 13, 1915.. Serial No. 771,306.

sages 25 are separated by the vanes 27 which areformed integrally with the disk 211 and abut the smooth surface of the intermediate section 20. The cover 16 is also provided with a recess 28 which receives the ring 29 forming one side of the return bend 26. Adjacent the shaft 10 the intermediate section 20 is provided with a sleeve 30 similar to the sleeve 21 above described and adapted to prevent leakage past the runner 12. The section 20 has formed on one side there of the diffusing passages 31 which receive the discharge from the runner 12. 'Ihese diffusing passages are similar to the passages 23 and the construction of this side of the intermediate section 20 is similar to that of the cover 16. rIhe vanes forming the passages 31 abut the smooth surface of the disk 32 which is also provided with vanes and passages for delivering water to the discharge chamber 19 which is formed between the disk 32 and the cover 18. The cover 18 has a smooth inner surface which abuts the vanes on the disk 32. A ring 33, similar to ring 29, is provided between the intermediate section 20 and the cover 18 for the purpose of forming one side of the return bend which connects the passages 31 cover 18 is perfectly smooth and may be turned in a lathe. The left hand side of the intermediate section 20 also has a smooth surface which may be turned in a lathe, and by reference to Fig. 3 it will be seen that the passages 25 formed between the vanes 27 on the disk 24 may be readily machined.

In order to enable the construction to be more readily understood the vanes have been shown as slightly separated from the adjoining surfaces, but it will be understood that this is not the way the construction will be carried out, in practice, the vanes being arranged to lit closely against these surfaces. The sections are bolted together by bolts 33 which clamp the intermediate section between the covers. It will be understood that the same construction will be followed out in a pump having three or four, or more stages, the construction for the other stages being similar to that shown and described.

Having thus described my invention what I claim is:

A multistage turbine pump comprising a shaft, a plurality of runners mounted on neXt runner and including a return bend adg Y, 1,135,364v

said shaft and having axially arranged intions and adapted to form one side of said 10 lets, and a casing inclosing said runners and p return bends.

provided with passages leading from the In testimony whereof I aiix my signature periphery of one runner to the inlet of the in presence of two Witnesses.

jacent the periphery of the casing, said cas- WILLIAM A DOBLE ing being formed in sections Which are sepa- Witnesses: rable on planesthrough said Water passages ARTHUR L. BRYANT, and having rings arranged between the sec- JOHN M. CoIT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patent Y Y Washington, D. C. 

